cis-1,2-Dichloroethene, 100 µg/ml, Methanol, 5ml

2,2',3,4',5,6,6'-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

EPA Method 8081A Pesticides QC Mix

Sertralin-HCl, 100μg/ml in Acetonitrile, 5ml